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Die upsetting is an effective method to produce bulk anisotropic Nd-Fe-B magnets with nanostructure and full density [1]. A variety of experimental evidence suggests that the grain boundary a play key role in magnetic hardening [2]. Therefore, the grain boundary diffusion method is an effective way to improve the coercivity of die-upset magnet [3, 4]. However, the special role of the grain boundary...
The magnetocaloric effect (MCE) is a thermodynamic phenomenon of magnetic materials, which is subjected to the variation of magnetic field Much effort has been put into developing the magnetocaloric materials over the past years, and a lot of materials with large magnetocaloric effect have been found [1-3], in which Ni-Mn-X (X= In, Sn, Sb, Ga) Heusler alloys attract extensive attention because it...
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